First, the young leaves purple. This symptom occurs mostly after the emergence of corn, the leaves are green first, but do not stretch, the stems are small, and the stems and leaves appear dark green and dark green. From the tip of the old leaf, it becomes dark green and purple along the edge of the leaf, then it turns yellow and withered, and then gradually develops toward young leaves. This disease mostly occurs in early spring, without applying phosphate fertilizer, or in low-lying areas. Nongda 108, Denghai 9 and 11 were more common. The main reason is the lack of phosphorus or the ability of roots to absorb phosphorus.
Second, the stem purple. This disease mostly occurs in the middle and late stages of plant growth. It begins to lose green chlorosis in new leaves, aggravate chlorosis between veins, and then the leaf margin turns redder and purple, and the base of the stem appears purple, but the old leaves remain brown. Sometimes the growth of plants is inhibited and they are small and weak. This disease is mostly dominated by sulfur malnutrition and sulfur deficiency. It is mainly caused by low organic matter content, long-term rapeseed cultivation, and sandy land.
Third, the middle leaves purple spots. This disease is more common in corn after the bell stage, mainly occurs in the leaves. A small round spot first emerged from the base of the leaf blade and then expanded to the leaf sheath. The lesion appeared roundish yellow, purple, purple brown, and then developed into a purple spot, about 1 mm in diameter, dense, tanal, with transverse bands on the leaves. Shape, followed by a reddish brown spot. This disease is caused by corn brown spot.
Fourth, leaves red. This disease is mostly associated with corn dwarfing. Seedling stage and adult stage are all visible. The leaves are yellow and green. When the plants are nearly mature, the leaves turn yellow and brown, and then turn into red and purple. Most of this disease can't head and die prematurely. Even if it is firm, the grain is small and stingy. This disease is mostly caused by corn dwarf mosaic disease.
Fifth, the tip of purple. This disease occurs after jointing of corn. The symptom is the chlorosis between the frontal veins of the lower leaves, often accompanied by rosary-like green spots. The leaves of the frontal leaves appear purple, and the tips of the leaves are dry. The disease is mainly caused by magnesium deficiency.
Six, the old leaves are red. The main reason is that the lower leaves are senescent and nutrients are transferred to new leaves.
Silage Wrap Film ,Width 750mm, Thickness 25um, Length 1500m,UV resistance 12-24months.
This kind of 750 Silage Wrap films can be produced with black, white and green colour,which are applied in MC-HALE,CLAAS and GOWELL package machine for round and square bales. This 750 silage wrap film is very popular for storage of silage and haylage getting the air out and do all that is possible to keep it out until you are due to feed it out,which have very high efficiency and very good effect on silage storage. The main market of 750 silage Stretch Film is Australia,New Zealand,Ireland,Germany and UK.
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